\documentclass[a4paper,12pt,openany]{article}
\usepackage{zhart}
% that's all folks

%--------------------- title and author ---------------------------------------
\title{A Journey to Python and Julia}
\subtitle{numerical computing}
\author{Liu Benyuan}
\address{The Department of Biomedical Engineering, Fourth Military Medical University, ChangLe West Road, 710032, Xi'an, P. R. China. liubenyuan@gmail.com}
\date{\today}

\begin{document}
%%-- graphics folder --%%
\graphicspath{{fig/}}
\maketitle
\tableofcontents

%%-- main source --%%
\input{sec1}

%%-- bibliography --%%
\bibliographystyle{bstutf8}
\bibliography{cluster}

%%-- back matter --%%
%\appendix
%\input{data/append_GML}
%\input{data/append_MI}

\end{document}
